<template>
    <div class="add-student">
      <title1></title1>
      <Navigation></Navigation>
      <el-row class="cards-container" :gutter="20">
        <!-- 添加学生信息卡片 -->
        <el-col :span="12">
        <el-card class="box-card">
          <h2>添加教师信息</h2>
          <el-form :model="form" :rules="rules" ref="addStudentForm" label-width="120px" class="form">
            <el-form-item label="学号" prop="studentNo">
              <el-input v-model="form.studentNo" autocomplete="off"></el-input>
            </el-form-item>
  
            <el-form-item label="姓名" prop="name">
              <el-input v-model="form.name" autocomplete="off"></el-input>
            </el-form-item>
  
            <el-form-item label="性别" prop="gender">
              <el-select v-model="form.gender" placeholder="请选择性别">
                <el-option label="男" value="男"></el-option>
                <el-option label="女" value="女"></el-option>
              </el-select>
            </el-form-item>
  
            <el-form-item label="班级" prop="class">
              <el-input v-model="form.class" autocomplete="off"></el-input>
            </el-form-item>
  
            <el-form-item label="专业" prop="major">
              <el-input v-model="form.major" autocomplete="off"></el-input>
            </el-form-item>
  
            <el-form-item label="邮箱" prop="email">
              <el-input v-model="form.email" autocomplete="off"></el-input>
            </el-form-item>
  
            <!-- 新增密码字段 -->
            <el-form-item label="密码" prop="password">
              <el-input
                v-model="form.password"
                type="password"
                autocomplete="off"
                placeholder="请输入密码"
              ></el-input>
            </el-form-item>
  
            <el-form-item>
              <el-button type="primary" @click="submitForm">提交</el-button>
              <el-button @click="resetForm">重置</el-button>
            </el-form-item>
          </el-form>
        </el-card>
      </el-col>
        <!-- 批量导入学生信息卡片 -->
      <el-col :span="12">
        <el-card class="box-card">
          <h2>批量导入教师信息</h2>
          <el-upload
            class="upload-demo"
            drag
            action="/api/admin/importStudents"
            accept=".csv"
            :on-success="handleBatchSuccess"
            :on-error="handleBatchError"
            :before-upload="beforeUpload"
          >
            <i class="el-icon-upload"></i>
            <div class="el-upload__text">将文件拖到此处，或<em>点击上传</em></div>
            <div slot="tip" class="el-upload__tip">仅支持CSV文件，大小不超过2MB</div>
          </el-upload>
          <el-button type="primary" @click="submitBatch">导入</el-button>
        </el-card>
      </el-col>
      </el-row>
    </div>
  </template>
  
  <script>
  import axios from 'axios';
  import { ElMessage, ElMessageBox } from 'element-plus';
  import Navigation from '@/components/navigation_adm.vue';
  import title1 from '@/components/title.vue';
  
  export default {
    name: 'AdmAddStu',
      components: {
          Navigation,
          title1,
      },
    data() {
      return {
        form: {
          studentNo: '',
          name: '',
          gender: '',
          class: '',
          major: '',
          email: '',
          password: '', // 新增密码字段
        },
        rules: {
          studentNo: [
            { required: true, message: '请输入学号', trigger: 'blur' },
            { pattern: /^\d+$/, message: '学号必须为数字', trigger: 'blur' },
          ],
          name: [
            { required: true, message: '请输入姓名', trigger: 'blur' },
          ],
          gender: [
            { required: true, message: '请选择性别', trigger: 'change' },
          ],
          class: [
            { required: true, message: '请输入班级', trigger: 'blur' },
          ],
          major: [
            { required: true, message: '请输入专业', trigger: 'blur' },
          ],
          email: [
            { required: true, message: '请输入邮箱', trigger: 'blur' },
            { type: 'email', message: '请输入正确的邮箱格式', trigger: ['blur', 'change'] },
          ],
          password: [ // 新增密码验证规则
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, message: '密码长度不能少于6位', trigger: 'blur' },
          ],
        },
        // 批量导入相关数据
        uploadFile: null,
      };
    },
    methods: {
      submitForm() {
        this.$refs.addStudentForm.validate(async (valid) => {
          if (valid) {
            try {
              const response = await axios.post('/api/admin/addStudent', this.form);
              if (response.data.success) {
                ElMessage.success('教师信息添加成功');
                this.resetForm();
              } else {
                ElMessage.error(response.data.message || '添加失败');
              }
            } catch (error) {
              ElMessage.error('网络错误，请稍后再试');
              console.error(error);
            }
          } else {
            ElMessageBox.alert('开发中，请稍候(#^.^#)')
          }
        });
      },
      resetForm() {
        this.$refs.addStudentForm.resetFields();
      },
      beforeUpload(file) {
        const isCSV = file.type === 'text/csv';
        const isLt2M = file.size / 1024 / 1024 < 2;
  
        if (!isCSV) {
          ElMessage.error('只能上传CSV文件!');
        }
        if (!isLt2M) {
          ElMessage.error('文件大小不能超过2MB!');
        }
        return isCSV && isLt2M;
      },
      handleBatchSuccess(response, file, fileList) {
        if (response.success) {
          ElMessage.success('批量导入成功');
        } else {
          ElMessage.error(response.message || '批量导入失败');
        }
      },
      handleBatchError(err, file, fileList) {
        ElMessage.error('批量导入失败，请稍后再试');
        console.error(err);
      },
      submitBatch() {
        if (this.uploadFile) {
          this.$refs.upload.submit();
        } else {
          ElMessageBox.alert('请先选择要导入的CSV文件(开发中)');
        }
      },
    },
    mounted(){
      document.title = '管理员后台系统';
    },
  };

  </script>
  
  <style scoped>
  .add-student {
    padding: 20px;
    width: 80%;
  }
  
  .cards-container {
      /* position:fixed; */
      left:100px;
      top:50px;
      
  }
  
  .form {
    max-width: 100%;
    margin: 0 auto;
  }
  
  .upload-demo i {
    font-size: 28px;
    color: #1890ff;
  }
  .upload-demo .el-upload__text {
    margin-top: 10px;
    font-size: 14px;
    color: #bfbfbf;
  }
  .upload-demo .el-upload__tip {
    font-size: 12px;
    color: #bfbfbf;
  }
  
  /* 确保卡片在大屏幕下各占一半 */
  @media (min-width: 768px) {
    .cards-container .el-col {
      display: flex; /* 确保卡片高度一致 */
      justify-content: center;
    }
    
    .cards-container .el-col .box-card {
      width: 100%; /* 让卡片占满列 */
    }
  }
  </style>